<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>tag</title>
</head>
<body>
	<!-- 1.标题标签 -->
	<h1>一级标题</h1>
	<h2>二级标题</h2>
	<h3>三级标题</h3>
	<!-- 2.div标签 -->
	<div style="height: 100px;width: 100px;background-color: blue;" >helloWorld</div>
	<!-- 3.段落标签 -->
	<p>世界如此美丽，为何不去融入。</p>
	<!-- 4.转义字符 -->
	<!--&lt;是<号-->
	<!--&gt;是>号-->
	<!--&nbsp;是空格<号-->
	&lt;ja&nbsp;va&gt;
	<!-- 5.无序列表 -->
<ul>
	<li>fddga</li>
	<li>dfg</li>
</ul>
	<!-- 5.有序列表 -->
<ol>
	<li>adffg</li>
	<li>gafgda</li>
</ol>
</body>
</html>